Mossberg 590 Nightstick
courtesy Mossberg and Twitter
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Mossberg’s 590 Shockwave “non-NFA firearms” have been wildly popular since the first model was introduced back in 2017. They’ve since expanded the line with a variety of calibers and models, including a magazine-fed 12 gauge version. Now Mossy’s announced the three latest additions to the the Shockwave line. Here’s their press release:

NORTH HAVEN, CT – O.F. Mossberg & Sons, Inc., a leading American firearms manufacturer announced today the introduction of three (3) new 12-gauge 590® Shockwave variants for the 2019 model year. The new models include the 590 Nightstick, 590 Shock ‘N’ Saw and the 590 Shockwave SPX.

Built on Mossberg’s proven pump-action design, each 590 Shockwave features an overall length of 26.37 inches; 14-inch heavy-walled barrel; non-binding twin action bars; positive steel-to-steel lock-up; an anti-jam elevator; dual extractors; and an ambidextrous top-mounted safety. 590 Shockwaves also feature convenient magazine clean-out cap; drilled and tapped anodized aluminum receiver; cylinder bore barrel with a single brass bead sight; and sling swivel studs. Unique to the 590 Shockwave models are a “bird’s head” shaped-profile grip that allows for greater control while lessening felt recoil.

courtesy mfr

590 Nightstick Non-NFA Pump-Action Firearm Specifications:
A Talo Distributors exclusive, the 590 Nightstick is a 6-shot, 12-gauge firearm with a 14-inch barrel; black anodized receiver; matte black barrel and magazine tube; and is equipped with a hardwood bird’s head grip and corncob forend.

courtesy mfr

590 Shock ‘N’ Saw Non-NFA Pump-Action Firearm Specifications:
The 590 Shock ‘N’ Saw is a 6-shot, 12-gauge firearm with a 14-inch barrel featuring a breacher muzzle; black anodized receiver; matte black barrel and magazine tube; Shockwave Technologies Raptor polymer bird’s head grip; aluminum M-LOK®-equipped forend; and signature Mossberg chainsaw foregrip.

courtesy mfr

590® Shockwave SPX Non-NFA Pump-Action Firearm Specifications:
The 590 Shockwave SPX is a 6-shot, 12-gauge firearm with a 14-inch barrel featuring a breacher muzzle; black anodized receiver; matte black barrel and magazine tube; Shockwave Technologies Raptor polymer bird’s head grip; heatshield; aluminum side saddle with 7 polymer shell-holder units, allowing for positioning of extra shells on either side of the receiver; and a top-mounted picatinny rail.

With an overall length of 26.37 inches, the BATFE (Bureau of Alcohol, Tobacco, Firearms and Explosives) has classified the compact 590 Shockwave platform as a “Non-NFA Firearm,” requiring no tax stamp for transfers. It has been classified and is considered a “firearm” under the Gun Control Act of 1968 (“GCA”), but it is not a long gun under GCA, and therefore Federal Law requires the purchaser of a 590 Shockwave to be 21 years of age.

Mossberg® was the first manufacturer to bring these 14-inch barreled, non-NFA firearms to the marketplace and now offers six 12-gauge models, a 20-gauge option and 410 bore from which to choose. For more information on the 590 Shockwave series, please visit

Shockwave® is a trademark of Shockwave Technologies/Ewer Enterprises LLC. M-LOK® is a registered trademark of Magpul Industries Corp.

Disclaimer: Although the Mossberg 590 Shockwave is classified as a “firearm” under GCA, and is not subject to the provisions of the National Firearms Act (NFA), state and local laws may be more restrictive. Although it is legal federally, the 590 Shockwave may be considered a “short-barreled” shotgun or “assault weapon” by certain state and local laws; and therefore illegal to possess. Please check with your local authorities concerning the legality of purchasing or possessing a firearm of this configuration.

About O.F. Mossberg & Sons, Inc.
Founded in 1919, O.F. Mossberg & Sons, Inc., is the oldest family-owned firearms manufacturer in America, and is the largest pump-action shotgun manufacturer in the world. Celebrating 100 years of innovation, Mossberg leads the industry with over 100 design and utility patents to its credit and stands as the first ISO 9001 Certified long-gun manufacturer. Complete information on commercial, special purpose, law enforcement and military shotguns, rifles and accessories are available at or by calling 1-800-363-5555. Mossberg can also be found on Facebook, Instagram, Twitter and YouTube.

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    • You were so wrong!
      Several states have approved the Shockwave firearm now…American Patriot States that is…

    • Yeah, that corncob forend grip is cool looking in a retro way. I’d put one on my standard, wood-stocked, 500.

      I guess it would depend on the color match, though.

      • Remington had the wood furniture before but I like the safety on the Mossberg better. The leather strap is nicer than the nylon strap on the original shockwave. The Tac-14 doesn’t have a strap and relies on the sling attachment to act as a handguard. I’ve never come close to touching the attachment and my hand hasn’t slipped off the slide/pump at all…that could change though if it were wet or in a stressful situation.

        As a range toy they’re fun and I have mine with 5 in the tube for home defense. Over the holidays I’ll probably get some dragon’s breath to light some bonfires with 😉

  1. Unfortunately Hawaii state law requires all shotguns to have an 18” barrel so no sale for us here in the Aloha (wannabe like Cali and NY) State. BUMMER…

    • It’s not a shotgun. It’s an “Other Firearm” (not to be confused with AOW or “Any Other Weapon” under the NFA).

      I don’t know how Hawaii regulates Other Firearms, however.

  2. Does the “chainsaw” fore end actually do anything except just be one more thing to scare the cattle?

    • Having played with the regular 500 Chainsaw a bit, I suspect it will improve its ergonomics enough the make me feel better about shooting that little monster in a 12 gauge. The only catch is – it is bulky and doesn’t lay flat in its hiding place.
      Now if they offer it in a 20, I’ll be all over it.

      • I’m Shocked! It tell you! …that it’s not available in zombie green or bright yellow ‘furniture’…

    • It seems to me that kind of attachment would be more useful on a semi-auto with a large capacity and an aiming device (e.g., laser) that allows for aiming away from the shoulder. But I’m not clear on how easy/hard it would be to transfer that attachment from the pump-action it comes with to a semi-auto. It looks like a rail attachment, but I’m not aware of the specs.

        • Event with a 3” 00 buck or slug shell bringing it up to eye level to aim with the bead the recoil is easily manageable. Shooting from the hip is fun but I need a lot of with in that area. I was pleasantly surprise though how accurate my tac14 is and the spread pattern on buckshot is acceptable. The real fun is with slugs though!

      • I agree, same with the .410 bore. At home defense ranges, I don’t see how you could go wrong with this in a .410 loaded with buckshot.

      • I own a 20 gauge, and have fired the 12. If I could do it over, the 12 would’ve been fine. This is after all, a 12 gauge buckshot load. You have to put a little ass and muscle behind it, but it’s not overbearing or unmanageable. The 20 is easy pie stuff. They can’t be that bad, since Mossberg is selling the ever living crap out of both 12/20. The 410 looks ridiculous, so it’s not my thing.

        With all of this said, I’m am not recoil shy or sensitive at all. YMMV.

    • I can see your assessment, if you’ve never shot it, and are relying on experiences using a pistol grip.
      The bird’s head grip, though, makes a world of difference.

  3. I’ve got one. I like it!!! 12ga Recoil is not that bad and patterning is surprisingly tight. They make a “brace” for it that may be on my X-mas list. I wish they would have put screw in choke on it so you could open it up a little or cinch it down even more. Compact and nasty. 54 “shots” in one tube. (6 shells)

    • James, have you tried the Federal low recoil “tactical” shells with the flite-control wad? I think you’ll find that they pattern much tighter than standard loads with the added benefit of lower recoil. At least that’s what I’ve found for mine.

  4. I would just put a very narrow beam LED light on top of the model with the rails. That’s all you would need for shooting from the hip. (Without blatantly blasting in the wrong direction)

    • I’m honestly surprised nobody has come up with a simple laser/light combo for the end of the magazine tube.

      keep it even more low profile

  5. I still like mine simple, the way it is. It belongs in a scabbard and once to start hanging all kinds of shit on it that sticks out, it defeats the purpose.

    Like Mr Lizard above, all I added was a low-profile laser on a rail.

  6. Always thought that corncob foregrips on pump guns looked good. That was one thing I always liked about the Ithaca 37.

  7. Semi auto with a laser sight for hip fire, now we’re talking. I did not like bringing a Shockwave up to my eye. At that point I was thinking, “let’s just add some barrel length and put a stock on this.”

  8. Now, if they would just make a version without the disconnector so it can be slam fired! That would be a hoot, as much fun as a ’97 Winchester!

    • Nobody is going to make shotgun without a disconnector for liability reasons. You can always modify it yourself, but you’ll be up $#!+ creek if you ever hurt someone with an UD and have to explain why you purposely removed the part that would have prevented the tragedy.

  9. I bought a 12 gauge version just to upset the snowflakes. Mounted a laser and sidesaddle and added some skateboard tape to the grip. It lives under my bed loaded with #4 buck shot. Mine isn’t bad to shoot with 2 3/4″ shells. I did try it (once) with 15 pellet 3″ magnum shells but “a man’s got to know his limitations”.

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